Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Eu quero saber as canetas com conv de 6.
 ###Tabelas: CREATE TABLE replays (replays_id AUTO_INCREMENT PRIMARY KEY, Tie no VARCHAR, Home team VARCHAR, Score VARCHAR, Away team VARCHAR, Attendance VARCHAR) CREATE TABLE most_points_in_a_match (most_points_in_a_match_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Tries VARCHAR, Conv VARCHAR, Pens VARCHAR, Drop VARCHAR, Venue VARCHAR, Date VARCHAR) CREATE TABLE singles:_12_9_titles_3_runners-up (singles:_12_9_titles_3_runners-up_id AUTO_INCREMENT PRIMARY KEY, Outcome VARCHAR, Date VARCHAR, Tournament VARCHAR, Surface VARCHAR, Opponent VARCHAR, Score VARCHAR) CREATE TABLE crime_statistics:_1995_2011_non-homicide (crime_statistics:_1995_2011_non-homicide_id AUTO_INCREMENT PRIMARY KEY, Year INT, Population INT, Total INT, Violent INT, Property Crimes INT, Forcible rape INT, Robbery INT, Aggravated assault INT, Burglary INT, Larceny Theft INT, Vehicle Theft INT) CREATE TABLE employment (employment_id AUTO_INCREMENT PRIMARY KEY, Employment Area VARCHAR, October 2010 VARCHAR, October 2011 VARCHAR, October 2012 VARCHAR, Net change VARCHAR)  
SELECT Pens FROM most_points_in_a_match WHERE Conv = 6